Finally got the A/C going in my 560... have a few questions with it:

My in gear, idle RPM is around 500-550rpm... is this normal or does it seem low? When the A/C is off the idle comes up a bit higher... maybe 75-150rpm.

Hot idle is around 900rpm, in park/neutral.



It appears I have a leaking vac pod or malfunctioning climate head. I have weak center vent flow and most is blowing to the windshield. I have no problem testing the pods, but is there a way to test the climate head (if the head itself could cause this).

Thanks

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I'm not a doctor, but I'll have a look.

'85 300SD 245k
'87 300SDL 251k
'90 300SEL 326k

Six others from BMW, GM, and Ford.

Liberty will not descend to a people; a people must raise themselves to liberty.[/IMG]

If it's like the 560SL, you can find the vacuum distributor, probably behind the glove box. It has like 5 vacuum connections, and an electrical connector. One connection is engine vacuum. The others go to the pods. You can disconnect each pod line and put a vacuum gauge on the connector. With the engine running, push the appropriate button and see if gauge shows vacuum.

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Chuck Taylor
Falls Church VA
'66 200, '66 230SL, '96 SL500. Sold: '81 380SL, '86 300E, '72 250C, '95 C220, 3 '84 280SL's '90 420SEL, '72 280SE, '73 280C, '78 280SE, '70 280SL, '77 450SL, '85 380SL, '87 560SL, '85 380SL, '72 350SL, '96 S500 Coupe